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Tooth macrowear analysis of Indigenous Australian people from Yuendumu.

Luca Fiorenza¹, María Hernaiz-García², Ian Towle¹

¹Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, Melbourne, Australia.

Archives of Oral Biology

|May 1, 2026

Summary

Dental wear patterns in the Warlpiri people show a mix of forager and westernized diet influences. While their masticatory system remains largely traditional, dietary shifts are evident in tooth wear, particularly in younger individuals.

Keywords:

Cultural habits Diet Hunter-gatherers Occlusion Transitional societies

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Area of Science:

Paleoanthropology
Dental Anthropology
Archaeology

Background:

The Neolithic transition to agriculture increased oral pathologies due to softened, starchy, and sugary foods.
Agricultural diets caused imbalances in the masticatory system, reflected in dental wear.

Purpose of the Study:

Analyze molar macrowear patterns in the Warlpiri people of Central Australia.
Investigate dental functional changes linked to diet and cultural transitions in a contemporary population.
Utilize occlusal fingerprint analysis to track masticatory adaptations.

Main Methods:

Molar macrowear patterns of 33 Warlpiri individuals from Yuendumu were analyzed.
Occlusal fingerprint analysis was employed to assess dental functional aspects.
The Warlpiri were studied during their early transition from hunter-gatherer to a westernized lifestyle.

Main Results:

Warlpiri molar macrowear resembled hunter-gatherers with mixed diets (hard and soft foods).
Oblique wear patterns were more pronounced in the Warlpiri compared to recent hunter-gatherers.
High prevalence of tooth chipping was observed, linked to hard foods and non-masticatory uses.

Conclusions:

Molar macrowear suggests minimal changes in the Warlpiri masticatory system, typical of foragers.
Dietary shifts, including softer foods, are indicated by variations in tooth wear, especially in younger individuals.